Financial Instruments and Fair Value Measurements (Tables)

6 Months Ended

Jun. 30, 2020

Fair Value Measurements

Assets Measured at Fair Value on Recurring Basis

The following table identifies our assets and liabilities that were measured at fair value on a recurring basis (in thousands):

	Balance		Level 1		Level 2		Level 3
June 30, 2020
Assets:
Money market	$	147,902	$	147,902	$	—	$	—
U.S. treasury securities		—		—		—		—
Total assets at fair value	$	147,902	$	147,902	$	—	$	—
December 31, 2019
Assets:
Money market	$	61,882	$	61,882	$	—	$	—
U.S. treasury securities		189,736		54,910		134,826		—
Total assets at fair value	$	251,618	$	116,792	$	134,826	$	—